Interlocking control system for apparatus valves of water-gas sets



Feb, 17; 1925. 1,526,475

F. B. HAYES I NTERLOCKING CONTROL SYSTEM FOR APPARATUS VALVES OF WATERGAS SETS Filed May 3, 1923 2 Sheets-Sheet l F. B. HAYES I INTERLOCKINGCONTROL SYSTEM FOR APPARATUS VALVES OF WATER GAS SETS Filed Ma 3 2Sheets-Sheet 2 has Patented Feb. 17, 1925..

FRED B. HAYES, OF FORT VIAYNE, INDIANA, ASSIGNOR TO THE WESTERN GAS CON-STRUCTION COMPANY, OF FORT WAYNE, INDIANA, A CORPORATION OF INDIANAINTERLOCKING CONTROL SYSTEM FOR APPARATUS VALVES 0F WATER-GAS SETS.

Application filed May 3, 1923. Serial No. 636,419.

To all whom it may concern:

Be-it known that I, FRED B. HAYEs, a citizen of the United States,residing at Fort Wayne, in the county of Allen and State of Indiana,have invented certain new and useful Improvements in InterlockingControl Systems for Apparatus Valves of ater-Gas Sets, of which thefollowing is a specification, reference being had to the accompanyingdrawings, and to the reference characters marked thereon, which form apart of this specification.

1 This invention relates to means for automatically controlling watergas apparatus, and 'more particularly for controlling the action offluid pressure cylinders for operating the various apparatus valves insuch gas apparatus.

In the manufacture of water gas, as it is commercially practiced at thepresent time, the operations are such as to require the manipulation ofa number of valves in,ccrtain sequence and at certain intervals, whichrequires considerable skill and constant attention on the part of theoperators in order to avoid errors which may cause explosions, and inorder to produce a gas of uniform quality. andthe maximum results inquantity and quality of gas of which the apparatus is capable. I

Briefly stated, the gas making apparatus comprises a generator,carburetter, and su-' per-heater provided with a stack. There aresources of air supply to the generator and to the carburetter; steamsupply to the generator, and oil to'thc carburetter: all valvecontrolled; and, of course, the necessary piping.

The operation of such [an apparatus or water gas set, as it is called inthe trade, is divided into two periods known as the blast and the run.The blast serves to raise the temperature of the fuel bed in thegenerator and the checker bricks of the carburetter and superhcater toproduce an incandescent heating surface. and the run is the gas-makingperiod.

Presuming that the generator is charged with fuel, the blast is startedin the fol lowing manner: The stack valve being open," thegencratorblast valve will be opened to admit air under pressure below the fire.The gases produced by the combustion pass through a reversing valve,generally known as a hot valve, to the carburetter, where they burn uponmeeting a current of air which has been admitted into the carburetr 'terby the opening of the carburetter blast valve, and from thence to thesuperheater and to the stack. These valves, namely the generator airblast, carburetter air blast, hot valve, and the stack valve, willremain open for a period of time, generally about three minutes, afterwhich the carburetter air blast valve will first be closed, and then thegenerator air blast valve will-be closed. This blast period having beencompleted, the fuel in the generator and the checker brick of thecarburetter and superheater wi l .be in an incandescent condition.

The run or actual gas-makingperiod, of approximately four minutes, isstarted by first opening the generator steam valve, to admit steam underthe incandescent fuel. Immediately after the opening ofthe steam valve,the stack valve will be closed, and then the carburetter oil valveopened. After the predetermined interval of time, it is desirable toreverse the run of the steam by passing it down through the bed ofincandescent fuel in the generator instead of upwardly therethrough.This is accomplished by reversing the hot valve which automaticallygoverns the admission of steam into the generator. At the end of thisdown-run, the carburetter oil valve is closed and the hot valve againreversed to admit steam for a very brief up-run, after which thegenerator steam valve is closed. The stack valve is opened immediatelyafter the steam valve is closed. 7

From theforegoing, it will be manifest that in a complete cycle ofoperations, a con siderable number of valves must be opened and closedin every six to eight minutes. Furthermore, the operation of the variousvalves must occur in the proper order and at proper time intervals, asthe failure of any of the valves to properly operate may producedangerous conditions in or about the apparatus.

To insure the proper operation of the various parts of the apparatus, ithas been proposed to mechanically operate the various valves of thewater gas set by means of a fiuid'pressure cylinder connected with eachmain valve, and also to regulate these cylinders, or the flow 'of thefluid thereto,

' man or timing machine. It has also been by automatic devices called amechanical proposed to make'the timers not only automatlc butinterlocking, so that the timer, as a unit, will cease to operate if oneof its own parts fails to properly function. Aserious diiiiculty,however, is experienced when one of the apparatuswalves or its operatingcyl or at the right time.

each valve being located in a conduit which supplies the motive power oroperating fluid fora. articular motor or apparatus valveactuatingdevice, and means connecting said control valves to the variousapparatus valve motors whereby the action of an apparatus valve willgovern the action of the control valve. I

It is the main object of the present invention to obviate all of theabove mentioned objections and to eliminate pomibility of improperaction of the apparatus valves due to any cause. My object is to producean interlocking control system in the conduits carrying fluid underpressure to the valveoperating cylinders of a water gas set, and toautomatically control or interlock the operating cylinders for the aparatus valves,

whetherthe o erating fluid or said cylin ders is control ed= manually orby timer machines automatically operated.

Another object of my invention is to .con-

nect a system of signals with the control system, whereby notice ofanything having gone wrong will be conveyed'to the operator. y 1

These and other objects and advantages of my invention will be manifestas I proceed with my specification, my invention consisting in thecontrol system and in the devices and combination of devices hereinillustrated, described, and more particularly pointed out in the claimshereto appended.

, In the accompanying drawings, I have illustrated my invention asapplied to a conventional water gas set, but it will be apparent that itis applicable to other forms of a paratus and that the various detailsof mecl ianical construction may be modified by those skilled in thisart to suit the need rticlar installation. In sal drawings Fig. 1 is adiagrammatic elevation, partly fying the 'various parts, andsubsequently I will point out the method of operation of the variousfeatures more in detail by reference to Fig. 2.

The water gas apparatus or set illustrated in Fig. 1 comprises agenerator A, carburetter B, superheater C, a source of air supply E (asfrom a blower, not shown),

a source of oil supply F, a source of steam supply G, apparatus valvessuch as the generator blast valve H, carburetter blast valve I, stackvalve J, reversing or hot 'valve K, stem valve L and oil valve M; also awater seal or wash box N, a timer machine 0, and numerous pipe lines orconduits hereinafter referred The main or apparatus valves H, I, J, K, Land M, are operated from the cylinders 1, 2, 3, 4, 5 and 6,respectively, in a familiar manner, and any suitable fluid under pres--sure, as for example, water, gas, oil, or air, is "sent from the timermachine 0 to the several cylinders 1, 2, 3, 4, 5 and 6, and returned tothe timer by a circulatory system of piping. The timer 0 is suppliedwith an inlet or supply pipe P and an exit or outlet pipe Q.

An exit 21 in the dome of the superheater 0 leads by a tee-connectionboth to the stack and to the water seal N. The air blastleads;

from the pipe E through the valve H toithe generator inlet port 0; andto .the carbu-- retter, through the valve I to the pipes g and d toinlet port f.

In the steam supply line G and between the steam valve L and thegenerator steam lines 7 and 8, is a two-way steam valve D,

which is operatively connected with the reversing valve K, whereby steamis supplied through the line 7 to the lower port a of the generator forthe np-run and through the line 8 to the upper port I) for the downrun.An oil supply pipe F, when the valve M is opened; furnishes a spray ofoil to-the carburettor B, through a suitable nozzle.

R is a whistle in the air line 1 connected to the air conduit betweenthe generator blast valve H and the generator A. S is a steam whistleconnected by the line 8 to the steam supply pipe between valves L and D.

The cylinder 1 for operating the generator blast valve H is actuated byfluid under pressure from the timer Ov through the conduits or lines 9and 10. The cylinder 2 which actuates the carburetter air blast valve Ihas a connection vwith the timer'O through the conduit or line 11 and12. The cylinder 3 which actuates the stack valve J connects with thetimer 0 by the conduits 13 and 14. The-cylinder 4 which actu'ates thehot valve K connects with the timer 0 by the conduits l5 and 16. Thecylinder 5 which operates thesteam valve L connects with the timer 0 byconduits or lines'17 and 18. The cyl inder 6 which actuates the oilvalve M connects with timer 0 by the conduits or lines 19 and 20.

When the steam is on the down-run, the gas produced passes out of theexit 0' to a branch pipe 2lrthrough the hot valve K and through the pipe22 and conduit d to the carburettor B", I

Further details need not be stated as the gas set just described. isconventional and well known. To such an apparatus I apply my invention,as more fullyshown in Fig. 2. I will now proceed to describe myinterlocking control system, which, it will be seen by reference'to Fig.2, includes a series of small interlocking or controlvalves designatedby the numerals 25 to 38, inclusive, located in the various conduits 9to 20 inclusive, whichconduits supply the operating fluid under pressureto the cylinders which actuate the apparatus valves H, I, J, K, L and Mthe control valves being so connected together and with the variousparts of the gas set, as hereinafter more fully explained, as

, to open'or close off, as the case may be, the

fluid supplyin said conduits to the cylinder which actuates the valvewhich is designed to operate in the next succeeding cycle of operations,and to influence certain other parts of the system, by locking thevalve-operating cylinders against operation, so that no valve-operatingcylinder will operate or start to operate until (and only when). thevalve operated by the cylinder next proceding in the cycle of operationshas completed its work and has fully functioned. This interlocking orcontrol of the movementof of any one of-the said apparatus valvesoccursequally, whether the flow of liquid under pressure through said controlvalves is toward or from the valves; that is, whether thecontrol fluidis operating in a direction to cause the opening of a given apparatusvalve or in the opposite direction to cause the closing of said valve.It will also be understood that the fluid to actuate the severalcylinders may, so as my invention is concerned, be supplied from anysuitable source other vthan from the timer machine O hereinbeforereferred to.

It will be seen that thepip e line or conduit 9 is provided with valves25 and 26; the pipeline-10, with a valve 27. The line or conduitllconnected with the carburetter blast valve operating cylinder 2, isprovided with'a valve 28. The conduit or line 13 connected with thestack valve operating cylinder 3 is provided with valves 29, 30 and 31,while its companion line 14 is provided with-a valve 32.- The line 16from the hot valve operating cylinder 4 is provided with a valve Theline or conduit 19 from the oil valve operating cylinder 6 is providedwith valves 34 and 35.

The steam whistle line 8 is provided with valves 36 and 37 and the airwhistle line r has a valve 38. The valves 26, 27, 29, 30, 31 and 32 areprovided with springs 39, 40, 41, 42, 43, and 44, respectively, toinsure prompt action for the purpose hereinafter explained.

The cylinder 1 has a piston 45, piston rod 46 connected by a suitablecoupling 47 with the valve stem or lever 48 of the blast valve H.Secured to the valve actuating stem or lever 48 are two arms 49 and 50;the outer end of the arm 49 straddles and has sliding connection with arod 51 which connects the valves 28 and 38. Fixed upon said rod 51 aretwospaced apart collars or shoulders 52, 53, the end of the arm 49 beingbetween said collars. The valve 29 has a stem 54 similarly provided withfixed collars 55 and 56 and the end of the arm 50 has sliding engagementwith the stem 54 between said collars 55 and 56.

Similarly, the valves 26 and- 30 are provided with stems 57 and 58,respectively, and these stems have fixed, spaced apart collars 59, 60,and 61, 62, respectively. The cylinder-2 has a piston 63, piston rod 64,'and coupler connection to the arm or stem of the' carburetter blastvalve I. Upon the latter are rigidly secured the two arms 66 and 67,which have sliding engagement at their ends with the stems 57 and58,'respectively.

The cylinder 3 has. a piston 68, piston rod 69, and coupling 70, bywhich it is connected with the lever or stem of the stack valve J, andthe said valve stem or lever is provided with two fixed arms 71. and 72,the outer ends of which have sliding connection with the stems or rods'73 and 74, respectively. The rod 73 connects the valves 25 and 36, andis provided with'two spaced apart collars 75 and 76, one on each side ofthe arm 71. 1 Similarly the stem '7 4 connects valves and 34, and hascollars 7 7 and 7 8 for contact with the arm 72.

The cylinder 4 has a piston 7 9, piston rod and coupler connections 81,with the arm orle ver 82 of the hot valve K, and the said lever isprovided with rigid arms 83 and 84. The arm 83 has sliding connectionsbetween the collars 85 and 86, on the stem 87 oi the valve 27, while thearm 84 has sliding connection between collars 88 and 89, on the stem 90ofthe valve 32.

The cylinder 5 has a piston 91, stem 92, and a coupler connection 93with the lever or stem of the steam valve L on which valve lever or stemis an arm 94. The valves 35 and 37 are connected by a stem or rod 95carrying spaced apart collars 96 and 97, between which the end of thearm 94: projects and has sliding engagement with the rod 95.

The'cylinder 6 has'a piston 98, piston rod 99 and coupler connection 100with the stem 9 of the oil valve 'M. 'To the said stem is rigidlysecured the arm 101, the end of which has sliding engagement with thestem 102 of the valve 31,- which stem 1.02 carries the spaced apartcollars 103 and 104:.

The operation of my. interlocking control system which includes thecontrol valves to 38, inclusive, and their operative connec- I and theblower turned on, the first valve to be operated is the generator blastvalve H. The diagram, Fi 2, shows the generator blast cylinder 1 withits piston l5 down, in-

dicating that the generator blast valve H is in the closed -position. Toopen the valve H, fluid under pressure is sent to the cylinder 1,through the conduit or line 9, to raise the piston and its connectedgenerator blast valve. Immediately the generator blast valve IIcommences to open by means of the upward travel of the piston 45 incylinder 1, and of the arm 50 travelling therewith, pressure is removedfrom the spring 41, whereupon the control valve 29 located in the stackvalve' conduit 13 is actuated, resulting in stopping. circulation offluid in conduit 13 and thus holding the stack valve J open while thegenerator blast valve H is open. In other words, the very beginning ofthe opening operation of the generator blast valve H results in lockingthe stack valve J in open position.

When the generator blast valve H has almost reached its open position,the piston 45 being almost at the top of the cylinder, the

arm 49 on the valve stem 48 will come in contact with the collar 52 onthe stem 51 of the control valve 28 located in conduit 11,

thereby opening this control valve 28 and seems I in position to beopened as soon as it is time to operate said valve I in the cycle ofoperations.

Immediately the carburetter blast valve begins to open by means of theupward travel of the piston 63 in the cylinder 2, pressure of the am 67is removed from the spring 42 which actuates the control valve 30located in the stack valve conduit 13, thereby quickly closing saidcontrol valve 30, and making circulation inthe stack valve conduit 13impossible. The stack valve J will therefore necessarily remain in theopen position while the carburetter blast valve I is open, even ifanything should go wrong with the generator blast valve mechanism. Theopening operation of the carburetter blast valve I, through its valvestem and the arm 66, also releases pressure on the spring 39 whichactuates the control valve 26 .located in the conduit 9, thus lockingthe enerator blast valve H in open position w ile the carburetter blastvalve is open.

From the foregoing it will be clearly understood that the stack valve Jis locked in the open position by the opening operations" of both thevalves H and I, as well as by either one of them; that the carburetterblast valve I is not permitted to open until the generator blast valve Hhas fully opened; and that the generator blast valve H is locked in theopen position while the carburetter blast valve is open.

The valves just referred to will remain in the open position for thetime required for the blast period, after which the carburetter blastvalve I will be closed by means .of fluid directed through the conduit12 above the piston 63 in the cylinder 2. The closin of t e valve I andconsequent reverse trave of the cylinder piston 63 will cause the arm 66to contact with the-shoulder 60 on the I -stem of the control valve 26in conduit 9, I

generator blast and carburetter blast valves 11 and I are closed.

To commence the run period, fluid is now directed through the conduit-17to 0p-.

erate the cylinder fiwhich actuates the gem .erator steam valve L. Asshown in the diagram, Fig. 2, the generator steam valve L is closed, thepiston 91 being at the bottom of the cylinder 5. The conduits 17 and 18are unobstructed and the valve L freeto operate. The. opening. movementof the steam valve L, by means of its valve stem and connected arm 94,causes contact with the shoulder 96 on the stem 95 of the control valvein the conduit 19 leading to the carburetter'oil-valvecylinder 6. Thiscontact of the arm 94 with said shoulder 96 is timed to take place whenthe steam valve L is almost completely open, and this is accomplished byproperly positioning the shoulders 96 and 97 on the stem 95 to providefor the necessary sliding or lost motion of the arm 94 before itfunctions to operate the valves 35 and 37. Therefore, if the generatorsteam valve L does not fully operate, it follows that the carburetteroil valve M will not be permitted to open, because fluid in the oilvalve cylinder conduit 19 cannot circulate when the control valve 35 hasnot been operated by the movement of the valve stem arm 94 to open saidconduit 19. The piston 98 in the oil valve cylinder 6 will, therefore,be held against movement and the oil valve M locked in the closedposition.

When the generator steam valve L fully functions for the openingoperation, the conduit 19 will be unobstructed (except by the valve 34controlled from the stack valve, and

, hereinafter referred to).

Immediately following the opening 'of the generator steam valve L, atthe beginning of the run the stack valve J must be closed. The conduits13 and 14 to the stack valve cylinder 3 will be unobstructed (followingthe proper and complete closure of the generator blast valve H andcarburetter blast valve I) so that the stack valve J may be closed atthe desired time by directing fluid through the conduit 14 above thepiston 68 to lower the latter in the cylinder 3.

This closing of the stack valve causes the arms 71 and 72, connected tosaid stack valve stem, to Contact with the shoulders 76 and 7 8.respectively,'on the stems of the two contrglvalves 25 and 34. In bothinstances, the contact takes place at the end of the thrus't of thestack valve cylinder piston 68 or when the stack valve J is almostcompletely closed. The arm 71 contacts with the shoulder 76 on the stemof the control valve 25 in the generator blast conduit 9, and at thecompletion of the closing movement of the'stack valve, the control valve25 is closed and circulation stopped in the con:

i duit 9, so that the generator blast valve H is locked and could underno circumstances be opened while the stack valve J is closed. The arm72, in accompanying the valve stem on its downward movement to close thestack valve J, contacts with the shoulder 78 on the stem of the controlvalve 34 and opens the latter and the conduit 19, thus permittingcirculation of fluid therein. Connected to the stem of the control valve34 is the control valve 33 located in the hot valve conduit 16. The sameoperation which opens the valve 34 in conduit 19, therefore, opens thevalve 33, and permits fluid to flow through the conduits 15 and 16 tothe hot valve operating cylinder 4.

It is to be understood from the foregoing that at a certain time in therun or gas making period the mechanical conditions in the set are suchthat the operating fluid may be directed to the generator steam cylinder5 to open the valve L and admit steam to the generator. At that momentthe stack valve J is still open, and the hot valve K is locked in theup-run position by means of the valve .33 controlled by the arm 72 fixedto the stack valve stem. It will also be understood that the completeopening of the steam valve L has resulted in opening the control valve35 in the carburetter oil valve conduit 19, but that said oil valve M isstill locked against operation because of .the closed valve 34 inconduit 19 controlled b the stack valve J.

There ore, immediately after the steam vaive L has been fully opened,fluid is directed through conduit 14 to close the stack valve J. The endof the stroke of the valve J in closing results in opening the controlvalve 34, so that immediately after the closing of the stack valve Jfluid may be directed through conduits 19, and 20, to said carburetteroil valve cylinder 6 to open the oil valve M. Water-gas formed b thesteam passing through the generator 1n the up-run and through the hotvalve K to the carburetter may thus be enriched with oil sprayed uponthe gases. This same movement of the stack valve J, in closing, has alsoclosed the control valve 25 in the con- 'duit 9, so that the generatorblast valve H is locked against operation while the stack valve isclosed. The closing of the stack has further resulted in opening thecontrol valve 33 in the hot valve conduit 16, so that said conduit isnow unobstructed. When it is desired to reverse. the flow of steam forthe down-run in the generator A, fluid. will be directed in conduit 16to the hot valve cylinder 4 to o erate the hot valve K. After the desiredown-run. the fluid in conduits 15, and'16, may be directed to reversethe hot valve for the brief up-run period.

It will be seen from Fig. 2, that when the carburetter oil valve M hasbeen permitted to open (following the removal of conduit obstructions bythe opening of the generator steam valve and the closing of the stackvalve, as above explained), the opening movement of the carburetter oilvalve stem carrying the arm 101 releases pressure on the spring 43 andresults in closing the control valve, 31 in the stack valve conduit 13,

r so that the stack valve J (having been preerator blast conduit 10,locking the stack valve J against opening while the hot valve K is inthe down-run position, and locking the generator blast valve H againstopening during the same period of time.

At the end of the run period, and practically simultaneously with thereversing of the hotvalve K from the down-run to the up-run positions,fluid is directed to the carburetter oil'valve cylinder 6 to close thevalve M. The closing of the oil valve M operates to openthe controlvalve 31 in the conduit 13, leaving thatconduit unobstructed andthestack valve J free to be opened,

Next in the operation, fluid is directed to the steam valve cylinder 5to close thevalve L, and then fluid is directed through conduit 13 tothe stack valve cylinder 3,'to open the stack Valve J. This opening ofthe stack valve J at the end of the stroke of the valve stem, opens orunlocks the control valve 25 in the-generator blast conduit 9 and leavesthat'conduit unobstructed and the generator blast valve H free tooperate. The 0 ening of the stack valve J also closes control valve 34in the conduit 19, thereby locking the oil valve M against opening, andcloses control valve 33 in conduit 16, thereby locking the hot valve Kin its up-run position, which is the position it will hold during thefollowin blast period.

%0 now, at the end of,the run, we have the stack valve open, thegenerator steam valve closed, the carburetter oil valve closed andlocked against opening until the stack valve and generator steam valveshave again been operated, and the hot valve in the ,uprun position andlocked against movement while the stack .valve is open. Also, we havethe generator blast valve closed but ready to be opened when fluid isdirected to its operating cylinder, and the carburetter blast valveclosed, but ready to operate immediately after the generator blast/valvehas completed its opening operation and unlocked the control valve 28now closed in the conduit 11.

In this position, the set is ready for the next blast period.

Some of the control valves, those designated 26, 27 29, 30, 31 and 32,are designed to be operated quickly, under the influence of theirsprings, when the arms 66, 83, 50, 67, 101 and 84, respectively, areoperated. However, auxiliary means are provided whereby said valves willbe operated in the event anything should go wrong with said springs. Forexample, the arm 66 in its upward travel will contact with the shoulder59 to closethe valve 26; arm 67 will contact with shoulder 61 to closevalve 30; arm 50 with shoulder 55 to close valve 29; arm 83 withshoulder 86 to close valve 27; arm 84 with shoulder 88 to close valve32, and arm 101 with shoulder 104 to close valve 31.

The means for signalling the operator by the steam whistle b and the airwhistle R will now be described. Just at the beginning of the runperiod, after the steam valve L has fully operated, the control valve 37in the steam whistle conduit 8 will be opened, permitting steam to passto the whistle which blows momentarily, indicating that the apparatus isin order and shifting from the blast period to the run period. l

As heretofore stated, the stack valve J must be closed immediately afterthe generator steam'valve L is opened. The stack valve, by means of thearm 71, aetuates a control valve 36 in the steam whistle conduit a,closing said valve36 when the stack valve has almost completely closed;the closing of the control valve 36 stopping the sound of the whistle. I

Therefore, the momentary blowing of the steam whistle indicates theproper operation of the valves during the blast period, and

the stopping of the sound indicates the closing of the stack valve.preparatory to the run period.

At the end of the run,'the control valve 38 in the air whistle line 7'is 0 en. When, at the beginning of the blast the generator blast valve His opened, air will pass through the air line 7* to the whistle R whichwill sound for a moment, for when the valve H is fullyv opened the armv49 Will have contacted with the shoulder 52, thus closing the air linecontrol valve 38. If, however, anything had gone wrong during the gasmaking run period, the'generator blast valve would not fully open, thearm 49 would not close the valve 38 and consequently air would flowthrough conduit 1* and the whistle R continue to blow until the operatorgave the necessary attention to the apparatus.

The control valves 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37and 38 are'shown herein as small cylinders containing recip rocatingpistons to'open and close the inlet and outlet ports; and this is aconvenient mechanical form of apparatus in the several fluid conduits tocontrol the flow. In practice, the travel of the piston is from A to ofan inch. and these little piston valves answer all requirements.However, it is to be understood that other forms of control valve areequally applicable, the only requirement being that the valve located inthe designated conduit is adapted to be mechanically-connected to theparts which operate and control it, so as to completely open or closethe conduit to permit or shut off the flow of fluid therethrough.Various otherchanges may be made by the skilled mechanic according tothe necessities of each installation 'as previously stated. i

It will be noted that the mechanism for actuating the control valves isso connected with the apparatus valves, thatif anything should go wrong,as for-example if the connecting rod between a cylinder and itsapparatus valve stem should break, there would be no interference withthe actuation of the control'valves by the operation of the apparatusvalve. In other words, when the apparatus valves function, the controlvalves will be also actuated to open or close, as the case maybe, andeither permit or prevent circulation. in the fluid conduits to theapparatus valve cylinders.

It is to be noted'that the control valves 29, 30, 31 and 32 in the stackvalve cylinder fconduits l3 and 14;, and the control. valves 26 and 27in the generator blast valve cylinder conduits 9 and 10 are preferablyspring actuated so that the moment pressure is released from saidsprings by the beginning of movement of the apparatus valves associatedwith said control valves, the latter will instantly be actuated.

Whenever a'c ontrol valve is closed so as to stop circulation in aparticular valveoperating cylinder conduit and to hold the apparatusvalve, in, inoperative position,

such closing of the control valve occurs, under influence of its spring,immediately upon the beginning of'movement of the apparatus valve withwhich said control valve is operatively connected.

Whenever a control valve is opened so as to permit circulation'in aparticular valveoperating cylinder conduit and leave the apparatus valvefree to operate, such opening of the control valve occurs only when theap aratus valve with which it is connected as almost fully operated.

Itwill' therefore be understood that the interlocking of the apparatusvalves to render them inoperative occurs when a par- 4 ticular apparatusvalve begins to function,

while the unlocking of the system to render the apparatus valvesoperative occurs when,

and only when, a particular apparatus valve or valves have completelyoperated. I i

From the foregoing description it wilLbo seen that I have provided meanswhereby-the gas set are positively governed, embodying a system ofinterlocked parts whereby the operation of a given apparatus valve inone cycle of the operation'of the set will lock one or more apparatusvalves in an inoperative position, and will permit of the operation ofcertain other apparatus valves only upoii the completion of theoperation and full and proper functioning of the said given apparatusvalve.

I claim as my invention:

1. In a water gas apparatus provided with fluid actuated cylinders foroperating the apparatus valves and with fluid conduits for saidcylinders, a valve located in the fluid conduit to control a cylinder,which valve in turn is controlled by an apparatus valve.

2. In a water gas apparatus provided with actuating cylinders foroperating the apparatus valves and with fluid conduits for saidcylinders, a plurality of interlocking control valves located in thefluid conduits and means associated with the apparatus valves of the setand with said control valves to lock one or more of said apparatusvalves in an inoperative position -the apparatus valves and with fluidconduits for said cylinders, a plurality of interlocking control valveslocated in the fluid conduits and operative connections between saidcontrol valves and the cylinders for operating the apparatus valves ofthe set whereby certain of said apparatus valves will operate only uponthe proper andcomplete functioning of another apparatus valve.

4. In a water gas apparatus provided with fluid actuated cylinders foroperating the apparatus valves and having fluid conduits for saidcylinders, a plurality of interlocking control valves located in thefluid conduits and'operative connections between the control valves andsaid cylinders, whereby certain of said control valveswill be actuatedto close the fluid conduits at the begin ning of the movement of theapparatus valve, while other control valves will be actuated to open thefluid conduits only at the extreme end of the movement of the apparatusvalves.

5. In a water gas apparatus provided with fluid actuated cylinders foroperating the apparatus valves, and fluid conduits for said cylinders, acontrol valve located in one of t e fluid conduits, operativeconnections between the control valve and the cylinders for actuatingthe apparatus valves, said connections including means associated withthe control valve to close the. latter upon the beoperation of theapparatus valves of a waterginning of the movement of an apparatusvalve, and means associated with the control valve for opening thelatter at the extreme end of the movement of an apparatus valve.

6; In a Water gas apparatus provided with fluid actuated cylinders foroperating the apparatus valves, and fluid conduits for said cylinders, asystem of interlocking control valves located in the fluid conduits, andoperative connections between said cylinders and said control valves.

7. In a Water gas apparaths provided with fluid actuated cylinders foroperating the apparatus valves and having fluid conduits for saidcylinders, a system of control valves located in the fluid conduits,means associated with the apparatus valves for controlling the movementof said control valves, the

latter being so interlocked as to prevent the operationofa givenapparatus valve until the apparatus valve next preceding it in the cycleof operations of the water gas apparatus shall have completely and fullytunetioned.

8. In a water gasiapparatus wherein the apparatus valves are operated byfluid actuated cylinders and having fluid conduits for ,said'cylinders,a plurality of control valves located in the fluid conduits, andoperative means whereby the controlvalve in the conduit leading to thecarburett'er blast valveoperating cylinder will be actuated by theoperation of the generator blast valve.

9. In a Water gas apparatus wherein the apparatus valves are operated byfluid actuated cylinders and having fluid conduits for said cylinders, aplurality of interlocking control valves located in the fluid conduits,

and operative means whereby the control valve in the conduit leading tothe carburetter blast valve-operating cylinder will be opened by theopening of the generator blast valve.

10. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits for saidcylinders, a plurality of interlocking control valves located in thefluid conduits, and operative means whereby the control valve in theconduit leading to the stack valve-operating cylinder will be actuatedby the operation of the generator blast valve. 11. In a'water gasapparatus wherein the apparatus valves are operated by fluid actuatedcylinders and having fluid conduits for said cylinders, a plurality ofinterlocking control valves located in the fluid conduits, and operativemeans whereby the control valve in the conduit leading to the stackvalve-operating cylinder will be closed by the opening of the generatorblast valve.

12. In awater gas apparatus wherein the apparatus valves are operated byfluid actuated cylinders and having fluid conduits for said cylinders, aplurality of interlocking control valves located in the fluid conduits,

Lee s/e an air Whistle alarm, and operative means apparatus valves areoperated by fluid actuated cylinders and having fluid conduits for saidcylindeis, a plurality of control valves located in the fluid conduits,an air whistle alarm, and operative means whereby the control valve inthe conduit leading to the air whistle will be closed by the opening ofthe generatorblast valve.

l i. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits for saidcylinders, a plurality of control valves located in the fluid conduits,-an: operative means whereby the control valve in the conduit leading tothe stack valveoperating cylinder will be actuated by the operation ofthe carburetter blast valve.

15. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits for saidcylinders, aplurality of control valves located in the fluid conduits,and operative means whereby the control valve in the conduit leading tothe stack valveoperating cylinder will be closed by the opening of theearburetter blast valve.

16". In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluidconduits for said cylinders,a plurality of control valves located in the fluid conduits, andoperative means whereby the control valve in the conduit leading to thegenerator blast valve-operating cylinder will be actuated by.

the operation of the carburetter blast valve.

17 In a water gas apparatus wherein the apparatus valves are operated byfluid ac.- tuated cylinders and having fluid conduits for saidcylinders, a plurality of control valves located in the fluid conduits,and

operative means whereby the control valve in the conduit leading to theoil valve-operating cylinder will be actuated by the operation of thegenerator steam valve.

19. In a water gas apparatus whereinthe apparatus valves are operated byfluid actuated cylinders and having fluid conduits for said cylinders, aplurality of controlvalves located in the fluid conduits, and operativemeans whereby the control valve in the conduit leading tothe oilvalve-operating cylinder willbe opened by the opening of the generatorsteam valve.

20. In a water gas apparatus wherein the ,apparatusvalves are operatedby fluid acthe steam whistle will be opened by the opening of thegenerator steam valve.

22. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits for saidcylinders, a plurality of control valves located in the fluid conduits,and operative means whereby the control valve in'the conduit leading tothe carburetter oil valve-operating cylinder will be actuated -by theoperation of the stackvalve.

23. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits for saidcylinders, a plurality of control valves located in the fluid conduits,and operative means whereby the control valve in the conduit leading tothe carburetter oil valve-operatin cylinder will be closed by theopening 0 the stack valve.

24. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits for saidcylinders, a plurality of control valves located in the fluid conduits,and operative means whereby the control valve in the conduit leading tothe hot valve-operating cylinder will be actuated by the operation ofthe stack valve.

25. In a water gas apparatus wherein the apparatus valves are operatedby fluid aetuated cylinders and having fluid conduits for saidcylinders, a plurality of control valves located inthefluid conduits,and operative means whereby the control valve in the conduit leading tothe hot valve-operating cylinder will be closed by the opening of thestack valve.

26. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits for saidcylinders, a plurality of control valves located in the fluid conduits,and operative meanswhereby the control valve in the conduit'leading tothe generator blast valve-operating cylinder will be actuated by theoperation of the stack valve.

27. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits for saidcylinders, a plurality of control valves located in the fluid conduits,and operative means whereby the control valve in the conduit leading tothe generator blast valve-opcrating cylinder will be opened by theopening of the stack valve.

28. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits I for saidcylinders, a plurality of control valves located in the fluid conduits,a steam whistle alarm, and operative means whereby the control valve inthe conduit leading to the steam whistle will be actuated by theoperation of the stack valve.

, 29. In a water gas apparatus wherein the apparatus valves are operatedby fluid acerative means whereby the control valve in the conduitleading to the stack valve-operating cylinder will be actuated by theoperation of the carburetter oil valve.

31. In a water gas apparatus wherein the apparatus valves are operatedby fluid ac tuated cylinders and having fluid conduits for saidcylinders, a plurality of control valves located in the fluid conduits,and operative means whereby the control valve in the conduit leading tothe stack valveoperating cylinder will be closed by the opening of thecarburetter oil valve.

32. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits for saidcylinders, a plurality ,of control valves located in the fluid conduits,and operative means whereby thecontrol valve in the conduit leading tothe generator blast valve-operating cylinder will be actuated by theswinging of the hot valve into one osition and will be reversed by theswinging of the hot valve into its reverse position.

33.In a water gas apparatus wherein the apparatus valves are operated byfluid actuated cylinders and having fluid conduits run position and willbe closed by the swinging of the hot valve into the downrun position.34. In a water gasapparatus wherein the apparatus valves are operated byfluid actuatedv cylinders and having fluid conduits for said cylinders,a plurality of control valves located in the fluid conduits, andoperative means whereby the control valve in the conduit leading to thestack valveoperating cylinder'will be actuated by the swinging of thehot valve into one position and will be reversed by the swinging of thehot valve into its reverse position.

35. In a water gas apparatus wherein the apparatus valves are operatedby fluid actuated cylinders and having fluid conduits [for saidcylinders, a plurality of control valves located in.the fluid conduits,and 0p.- erative means whereby the control valve in the conduit leadingto the stack valve-operating cylinder willbe opened by the swinging ofmeet ng the hot valve into the up-run position and will be closed by theswinging of the hot valve into the down-run position.

36. The combination of an automatically controlled Water gas set havingoperating motors for the apparatus valves of said set and fluid conduitsleading to saidmotors, with a control system comprising interlockingcontrol valves located in said conduits and means 'operativelyassociating said control valves with the apparatus valves and saidmotors whereby the control valves t are governed by the action of theapparatus valves.

In testimony that I claim the foregoing as my invention I afiix mysignature, in the presence of two witnessesythis 27th day of April,1923.

FRED B. HAYES.

Witnesses:

TAYLOR E. BROWN, B. L. MCG'REGOR.

